4WRZE16W8-150-7X/6EG24N9EK31/F1D3M

The 4WRZE16W8-150-7X/6EG24N9EK31/F1D3M proportional directional valve belongs to the WRZ Proportional Directional Valves series and is produced by Bosch Rexroth for precise flow regulation in hydraulic automation. Its valve size 16 establishes the flow section and mounting footprint used in manifold layouts. A standardized porting pattern of ISO 4401-07-06-0-94 aligns the body with common subplates so installation does not require custom drilling. Because the unit mounts on a subplate, removal and service can be completed without disturbing hard lines. At a differential of 10 bar the valve passes 150 l/min, giving designers a reference point for sizing pumps and actuators. The main stage tolerates operating pressures up to 350 bar, allowing use in high-pressure circuits. Return flow can be routed to tanks that run as high as 250 bar at port T, preventing inadvertent relief in back-pressure conditions. Electrical control is handled with a 24 V DC supply and a proportional command signal of 4–20 mA, making the valve compatible with most PLC analog outputs.

Maximum current draw is limited to 1.8 A, which helps select suitable power supplies and circuit protection. The coil terminates in a connector built to DIN EN 175201-804, giving a keyed plug that resists vibration. Pilot oil is fed internally from the pressure gallery so no external pilot line is required, while the drain is routed externally to keep the pilot stage free of back-pressure. A built-in pressure reducing valve type ZDR 6 DP0-4X/40YM-W80 maintains a stable pilot signal under fluctuating inlet pressures. The recommended hydraulic medium is mineral oil of the HL or HLP classes, ensuring proper lubrication and seal compatibility. NBR seals are fitted to contain the oil and withstand the temperature range of these fluids. With a mass of 13.6 kg, the assembly requires a rigid mounting surface or support bracket during service.